Home / 403,940.80-605,911.20-269,221.60

Finding the Fourth Proportional to 403,940.80, 605,911.20 and 269,221.60

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Solution

The fourth proportional to 403,940.80, 605,911.20 and 269,221.60 is: 403,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,940.80 : 605,911.20 = 269,221.60 : x
  2. Step 2: Convert to fraction form
    403,940.80/605,911.20 = 269,221.60/x
  3. Step 3: Cross multiply
    403,940.80x = 605,911.20 × 269,221.60
  4. Step 4: Simplify right side
    403,940.80x = 163,124,382,721.92
  5. Step 5: Solve for x
    x = 163,124,382,721.92/403,940.80
  6. Step 6: Final answer
    x = 403,832.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.